A girl fakes her own
suicide to escape from the strict confines of her aristocratic family
and a likely arranged marriage, only to be confronted with the harsh
realities of living in the slums with the working class and the ultimate
discovery that the boy she’s fallen in love with is plotting a
rebellion to destroy her family.

I'm sure there'll be a longer summary closer to the release date, this one's pretty tiny. The cover looks misty and mysterious, and the book sounds pretty weird. Hope it's spooky, the cover implies lots of spook. ;)

After I did this, I found a better summary on Goodreads on one of the other editions of the book.

Also from Goodreads:

In sixteen-year-old
Felicita’s world, magic is strictly controlled—or so those in power like
to believe. After her dearest friend, Ilven, kills herself to escape an
arranged marriage, Felicita chooses freedom over privilege. She fakes
her own death and leaves her sheltered life as one of Pelimburg’s
magical elite behind. Living in the slums, scrubbing dishes for a
living, she falls for charismatic Dash while also becoming fascinated
with vampire Jannik. Then something shocking washes up on the beach:
Ilven’s death has called out of the sea a dangerous, wild magic.
Felicita must decide whether her loyalties lie with the family she
abandoned . . . or with those who would twist this dark power to destroy
Pelimburg’s caste system, and the whole city along with it.

Yup, it sounds weird. Not sure how I feel about the "vampire," but we'll see when it comes out. :) The cover still looks awesome.